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    NONAQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY
    4.
    发明申请
    NONAQUEOUS ELECTROLYTE SOLUTION SECONDARY BATTERY 有权
    非电解电解质二次电池

    公开(公告)号：US20160028123A1

    公开(公告)日：2016-01-28

    申请号：US14771749

    申请日：2014-02-28

    Applicant: NEC CORPORATION

    Inventor： Daisuke KAWASAKI ,  Ikiko SHIMANUKI ,  Noboru YOSHIDA

    IPC: H01M10/0569 ,  H01M10/0525

    CPC classification number: H01M10/0569 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0034 ,  Y02T10/7011

    Abstract: A nonaqueous electrolyte solution secondary battery having an electrode element having a positive electrode and a negative electrode disposed so as to face each other, a nonaqueous electrolyte solution, and an outer package housing the electrode element and the nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains a cyclic sulfonic acid ester represented by the general formula (1), and a positive electrode active material in the positive electrode is a mixture of a lithium manganese composite oxide having a spinel structure and a lithium transition metal composite compound having a layered rock salt structure. wherein, in the formula (1), R1 and R2 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen group or an amino group with the proviso that R1 and R2 are not hydrogen atoms at the same time; R3 represents a linkage group selected from the group consisting of an alkylene group having 1 to 5 carbon atoms, a carbonyl group, a sulfonyl group, a fluoroalkylene group having 1 to 6 carbon atoms, and a divalent group having 2 to 6 carbon atoms in which alkylene units or fluoroalkylene units are bonded through an ether group.

    Abstract translation: 一种非水电解液二次电池，具有将正极和负极相对配置的电极元件，非水电解质溶液和容纳电极元件和非水电解质溶液的外包装体，其中，非水电解液 含有由通式（1）表示的环状磺酸酯，正极中的正极活性物质是具有尖晶石结构的锂锰复合氧化物和具有层状岩盐的锂过渡金属复合化合物的混合物 结构体。 其中，在式（1）中，R 1和R 2各自独立地为氢原子，具有1至5个碳原子的烷基，卤素基团或氨基，条件是R 1和R 2不在相同的氢原子 时间; R3表示选自碳原子数1〜5的亚烷基，羰基，磺酰基，碳原子数1〜6的氟代亚烷基，碳原子数2〜6的2价的基团的连接基团， 哪个亚烷基单元或氟亚烷基单元通过醚基键合。

    METHOD FOR PRODUCING SECONDARY BATTERY
    7.
    发明申请
    METHOD FOR PRODUCING SECONDARY BATTERY 有权
    生产二次电池的方法

    公开(公告)号：US20160308252A1

    公开(公告)日：2016-10-20

    申请号：US15103402

    申请日：2014-08-08

    Applicant: NEC CORPORATION

    Inventor： Jiro IRIYAMA ,  Makihiro OTOHATA ,  Kazuaki MATSUMOTO ,  Ikiko SHIMANUKI

    IPC: H01M10/0585 ,  H01M2/12 ,  H01M10/44 ,  H01M2/36

    CPC classification number: H01M10/0585 ,  H01M2/12 ,  H01M2/36 ,  H01M2/361 ,  H01M2/362 ,  H01M2/365 ,  H01M10/05 ,  H01M10/0569 ,  H01M10/058 ,  H01M10/446

    Abstract: It is an object of the present invention to provide a method for producing a secondary battery in which water in the outer package can be removed even when the secondary battery includes an electrolytic solution containing a halogen-containing compound. The present exemplary embodiment is a method for producing a secondary battery including an electrolytic solution containing a supporting salt, a nonaqueous solvent, and a halogen-containing compound, an electrode assembly including a negative electrode and a positive electrode, and an outer package, the method including (1) disposing a first solution containing at least the supporting salt and the nonaqueous solvent, and the electrode assembly in the outer package; (2) charging the electrode assembly; (3) emitting from the outer package a gas generated by the charge; and (4) injecting a second solution including at least the halogen-containing compound into the outer package after the gas is emitted, wherein the first solution does not contain the halogen-containing compound, and the electrolytic solution includes the first solution and the second solution.

    Abstract translation: 本发明的目的是提供一种二次电池的制造方法，其中即使在二次电池包含含有卤素化合物的电解液的情况下也可以除去外包装中的水分。 本示例性实施方式是一种二次电池的制造方法，其包括含有支持盐，非水溶剂和含卤素化合物的电解液，包含负极和正极的电极组件和外包装， 方法包括（1）在外包装中设置至少含有支持盐和非水溶剂的第一溶液和电极组件; （2）对电极组件进行充电; （3）从外包装发射由电荷产生的气体; 和（4）在排出气体之后，将至少包含含卤素化合物的第二溶液注入到外包装中，其中第一溶液不含有含卤素的化合物，并且电解液包括第一溶液和第二溶液 解。

    LITHIUM ION SECONDARY BATTERY
    9.
    发明申请
    LITHIUM ION SECONDARY BATTERY 审中-公开

    公开(公告)号：US20190173123A1

    公开(公告)日：2019-06-06

    申请号：US16095850

    申请日：2017-05-23

    Applicant: NEC CORPORATION

    Inventor： Ikiko SHIMANUKI ,  Daisuke KAWASAKI ,  Hitoshi ISHIKAWA ,  Suguru TAMAI

    IPC: H01M10/0525 ,  H01M4/38 ,  H01M10/0567 ,  B60L50/64

    Abstract: A lithium ion secondary battery having high energy density and excellent cycle characteristics is provided. The present invention relates to a lithium ion secondary battery comprising a negative electrode comprising a negative electrode active material comprising more than 25% by weight of a silicon alloy and a non-aqueous electrolyte solution comprising more than 10% by weight of a compound represented by LiN(SO2CnF2n+1)2 (wherein n is an integer of 0 or more) and 10% by weight or more of fluoroethylene carbonate (FEC).

    LITHIUM ION SECONDARY BATTERY
    10.
    发明申请
    LITHIUM ION SECONDARY BATTERY 审中-公开

    公开(公告)号：US20180358610A1

    公开(公告)日：2018-12-13

    申请号：US15779660

    申请日：2016-11-29

    Applicant: NEC Corporation

    Inventor： Ikiko SHIMANUKI ,  Suguru TAMAI ,  Daisuke KAWASAKI ,  Hitoshi ISHIKAWA

    IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/48 ,  H01M10/0567 ,  H01M4/62 ,  H01M10/058

    Abstract: When the particle size of a silicon material used for a negative electrode active material are small, a large surface area thereof easily causes a side reaction between the active material and an electrolyte solvent to occur, and the cycle characteristics of a lithium ion secondary battery decrease. In order to improve the cycle characteristics, a lithium ion secondary battery according to the present invention is characterized in comprising a negative electrode comprising a material comprising silicon as a constituent element and a polyacrylic acid, and an electrolyte solution comprising a fluoroethylene carbonate, wherein the 50% particle size of the material comprising silicon as a constituent element is 2 μm or less.

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